New gas vehicle have run the 5w20 oils now for some time.. and yes, they claim a 2 percent increase in fuel economy. However the hd diesel engines are design to run on a thicker oil , accouting for wear, and lowered oil pressure at the far end of the oil journals.... Running a thin oil in an engine with lots of wear is a sure fire way to finish it off.
Newer engines can design around the thinner oils by building larger volume oil pump,, not higher pressure and a bigger relief valve so the cold pressure is controlled better. They can also change the width and design of the bearing surfaces. AND they can see an increase in fuel economy.
I was hoping they would come out with a pre "catalyst" hd diesel oil, higher in zinc and phosphorous... for us older equipment users, as it was the best oil known.. newer oils lowered these additives for the emission systems at the expense of wear on our engines.
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Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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